Rotary engine.



Patented Nov. 21, 1911.

l n vanter @Wohnfl ENGINE.

ROTARY APPLICATION ILED FEB. l5. 1911.

B. F. AUGUSTINE.

wh. m. N wm.

B. P. AUGUSTINE.

ROTARY ENGINE.' APPLICATION Imm 1113.15, 1911.

Patented Nov. 21, 1911 8 SBUETS-SHBET 2.

B. F. -iIGIS'lIlIE.

ROTARY ENGINE.

'APPLIOATIQE FILED PEB. 15, 1911.

8 SHEETS-SHEET 4.

' eigjmz B. F. '\.U(}US'1`INE. A

ROTARY ENGINE.

APPLICATION FILED rms. 15, 19u.

1,009,213. l Patented Nov. 21, 1911-.

8 SHEETB-SHBET 6.

WI 21V/51515.- INz/ENTo/Q B'. P. AGUSTINE.

ROTARY ENGINE.

AWLIGATION FILED P33115, 1911.

'1,009,2 3. Patented 11011.21, 1911. 1

8 SHEETS-SHEET 7.

B. P: AUGUSTE ROTARY BNGIEE.

APPLICATION FILED 11:21.15, 1911.

Patented Nov. 21, 1911.

8 BHEETS-SHEET 34 [Nl/ENTO/e W1 mvg-5555 -f AUNITED STATES PATENToEEIoE.

1,009,213. Specification 0f Letters Patent Patented Nov. 21, 1911.

I Application tiled February 15, 1911. Serial No. 608,702.

To all whom it mayvconcern: f a transverse sectional View on the linea-a' Be it known that I, BENJAMrN F. AUGUS- of F ig. l. F ig. 3 is a.transverse scctioiial TINE, a citizen of the United States, residview onthe line b-b of Fig. 1. Fig. 4 is ing at Buffalo, in the county of Erieand a transversesectional view on the line c-c 60 5 State cf New York,have invented certain of Fig. 1. Fig. 5 is a detail perspective view newand useful Improvements in Rotary Enof the rotary carrier with thetelescoping gines, of which the following is a specificaps appliedthereto and shown in section cation. and with the piston carrying andbalancing A This invention relates to rotary devices, .means shown readyfor application to the 65 1o such as rotaryr engines or the llke.plstons. Fig. 6 1s a detall perspective One object is to provide arotary engine view of the abutment illustrating one of the emhoc'iyingsuch characteristics as to provide telescoping caps ready to bepositioned .t`or an elli-cient balancing of the pistons and thereon.Fig. 7 is a detail perspective view other parts of the engine. of one ofthe cam rings forming part of the 70 Another object resides in theprovision piston supporting and balancing means. 1, of a rotary enginewhose parts are so formed Fig. S iS a detail perspective view of the andconstructed that the. abutment has an other cam ring that forms partofthe pisarea of fluid pressure on one side substanton supporting andbalancing means. Fi tiolly commensurate with the lateral fiuid 9 is adetail fragmentary 'view of the anti- 75 pressure on the iotatingcarrier, together friction means associated with the pistons. withdevices whereby the fluid pressure on Fig. 10 is a fragmentary vieu'illustrating a. the abutment may be utilizedv to counterface view of oneof the parts of the anti-fricbalance the carrier. tion hearing retainingelements. Fig. 11 is A stil further objgct is to provide a. roa view ofthe centrifugal governor, a part 8G tary. steam, gas, air, combustion,or other being broken awa-y. v

fluid operating engine embodying a novel Referring now more particularlyto the organized mechanism designed to overcome accompanying drawingsthe reference charmmccessary vibration, noise, undue wear of acter 1indicates a base provided with a parts and leakage. v valve chamber 2with which communicates 85 3o A stili further object is to provide twoasteam inlet 3, there being an automatically fixed contacting membersand a movable balanced valve el disposed in said chamber member mountedwithin the innermost fixed and operable according to the varying loadmember with means constructed and arunder the influence of thecentrifugal govranged whereby pressure may be transferred ernormechanism, indicated generally by the 90 f between the lined. membersand utilized to reference character 5, said valve having a -balance themovable member. stern 6 which has connection with the gov- It stillfurther designed to provide a orner mechanism hereinafter' more fullydenovel lne-ans tor supporting and balancing scrihed.- This valve 4 ispreferably cylindri- 'the operating pistons whereby the pistons calincross-section and reduced intermediate 95 40 are held in properoperative position and its ends to provide a dat portion 7 having thecentrifugal force acting on the pistons a pluraiiy of apertures 8through which the incident to the rotation thereof is eii'ectually steammay pass to the. rear of the chamber overcome. 2 or. to the side of thevalve opposite that With the above and other objects in view, towardwhich the steam enters the valve 45 the present invention consists inthe conehalnher through the inlet 3 and by virtue struction andarrangement of parts hereirv of the stam expanding upon opposite sidesafter more fully described, illustrated in of the valve. 4 the latter isbalanced because g the accompanying drawings and particuthe -force ofthe incoming steam against the v y larly pointed out in the appendedclaims, it piston is eounterhalanced by the steam be- 50 beingunderstood that changes may be made hind thevalve intermediate the endsof the in the form, proportion, size and minor delatter. Thus the valvepr ctically divides tails withoutdeparting from the spirit or the valvechamber 2 into separate steam tsacrificing any ot' the advantages of thein compartments, and by reason of the lower vcntion. I v edge of thevalve being reduced or tapered, a5 ln the drawings: Figure 1 is alongitudias at 54 the steam upon opposite sides therenal sectiona viewor the engine. Fig. 2 is of will expand beneath` the valve and lift Q pv 1,009,213

tion with the valve chamber 2 by way of said port 70.

Disposed in the steam cylinder 9 is rigidly mounted an abutment 7',which is cylindrical in shape and is provided with a cylin dricalchamber 71 located eceentrically therein, thus forming in etiect amember cam shaped in cross section and which has its thickened portionpreferably at the lower side of the casing. This abutment has pe'-culiar exterior formation, by virtue of which, it has comparativelysmall surface contact with the interior of the casing, there being anexternal, annular outstanding, ring-like enlargement 10 which is theonly part of the abutment which contacts with the casing, the externalportions of the abutment upon opposite sidesof the annular enlargement10 being reduced and provided' with spaced ribs 11 disposedlongitudinally of the abutment and leading from the ends thereof tocorresponding rings 12 adjacent opposite sides ofsaid enlargement. Onthe interior of the abutment at its thickened portion between the inletport and the exhaust port 73. are staggered grooves 71 that becomelilled with oil and other foreign matter and form a seal to prevent theescape and waste of the operating Huid.

The numeral 13 indicates a rotary piston carrier rigidly secured on thepower shaft 14:

to rotate therewith. Said shaft is centrally journaled through the heads15 and en'd sections 16 of the cylinder.

17 indicates stuliing boxes formed prefer. ablyY on the heads 15 withwhich'coperate packing glands 18.

19 indicates lubricating wells and in each of which and supported on thepower shaft, is a ring or other suitable element 20 adapted to feed thelubricant from the bottom or' the wells 19 to the power shaft automatically, the rings being let down through the opening 21 in the top of thewells 19 and disposed in alinemer with the bores 22 of the wells toreceive the power shaft 14. I

The piston carrier is eccentrically disposed witllin the cylindricalchamber in said abutment and has its outer wall or surface in runningcontact with the wall of the chamber. Said carrier has ianged ends 23adapted to overlap the ends of the abutment. The carrier is formed insections so that it maybe disposed in the abutment oven though theflanges 20 be integral with the body of the carrier. I provide aplurality of bores 2- in the ends'ot the abutment which are? adapted to"eceive the stems 25 of the pack- I ing bloei@ 26, helical or othersprings or pressure exerting means-27 being confined within the boresand engaging said stems at the ends of the latter to force the ackingblocks normally against the inner aces of the end tlanges o the pistoncarrier, the packing 28 forming a steam tight joint between the abutmentand the flanged ends of the carrier. It will be noted that the stems 25are preferably of a diameter substantially the same as the diameter ofthe bores and that the springs 27 are of substantially the same diameteras the stems, and these sizes and this arrangement of these elementshave been adopted for the purpose of insuring an even pressure upon thepacking blocks by the pressure exert-ing means so as to prevent tiltingof the packing blocks and insuring an even bearing surface. Sleeves ortianged disks 29 and 30, hereinafter referred to as caps telescope 'theribbed ends of the abutment for cooperation ,with the ribs 11 and withthe enlargement 1() to form chambers 31 (see l.g. 1) between the ribs toprovide for steam cushioning or balancing of the piston. carrier. Thesechambers 31 are connected with the steam chamber 7a by a series of ports32. The operating uid in 32 into the chambers 31 and create a pressureon the caps.' The innerends of the caps 29 and 30 have running jointconnections with tlievrespective rings 12 and are tixe'd to the ends ofthe rotary piston carrier through the instrumentality of screws or othersuitable fastenings 33. In vorder to prevent leakage between the innerends of said caps and the sides of the enlargement 10 of the abutment Iprovide the inner ends of the caps with packing 34.

Formed in the piston carrier are radial piston guide-Ways 35 and 36 inwhich are monntedthe radial pistons 3T and 3S, respectively, which sliderelative to the carrier as the carrier rotates. Each piston carriespacking 39 in its outer edge and which is adapted to bear againsttheinner Wall of the abutment and against the pistons the steam nnpingesto drive the piston carrier and pistons and consequently operate theengine as will be hereinafter more fully explained.

The piston blades 3T and 3S eaclr'have i projections 40 at their endsthat project through the slotted openings tl1 of the caps 25) and 30 undwhich are preferably rectangular in cross section for engagement in thesimilarly `formed openings in the bearings 42 and 43 looselyv mounted inthe lugs 44 and 43 of the rings 4H and 47. respectively. These rings aremounted on fixed eccentric bearin,"r hubs 4S on the heads 15 of thecylinder. i These eccentric bearings` form means for supporting orholding the pistons in running contact wifi; the wall fit' 'the chamberT as the carrier rotates. lf desired. balls, roller i or other bearingelements are preferably disthe chamber 7 will pass through the portsposed Vbetween the hubs 48 and the innermost ring and also between therings as clearl)r shown in Figs. l and 4.

In order to counter-balance the centrifugal force acting on one pistonby the centrifugal force acting on the other piston the rings 46 and 4'(are inonntedupon each other with.

the innermost ring loose on the corresponding eeeentrie hub :1S and theoutermost ring loose on the innermost ring, sothat. both rings arepermitted to move or oscillate slightly on said eteentriolinonntings andalso with relation to each other so as to perand balancing means. Afore,perform more than one lui mitl the pistons to slide radiallY relative tothe, carrier as the carrier rotates. Moreover, hy reason of these rings,the distance between the hearings TL and 43 of said lugs iS equal at alltimes across the axis of the cylindrical bore, thereby insuring. notonly an etcient balance of the pistons but obviating undue wear onV thepiston 'supporting These rines, there` .elion7 in that they support thepistons in their guidewzrys so that they slide relalive to the earier inthe guideumys and also halanre the pistons. By virtue o' thesecharacteristics the cam rings may be termed combined piston supportingand balancing means."

The structure of the rings G :nal l? is peculiar, one ring fittingwithin the other. the ring" il having one side reduced and upon nichredueetlvportion the companion ringr ed' is xnomted, whereby theyoverlap oircuinfereniiall'v and inter-engage with relation to eachother, the .lugs als and of the rings being of a thickness eqnai to thethickness of both rings when assembled andV having their inneroverhanging ends curved to conform to the curvature of the rings withtheir outer ends curved to conform to the curvature of the outertlang'ed wall 5l of the heads ib whereby the lugs et and 1&5 havemovement in the space betweenthe outer circumference of the rings andthe.

inner circumference of the flanges il of the heads. l

'lo facilitate an efficient sliding inoxeinent of the pistons in theirguideways and to reduce friction to a Inininiuni, one side of eac-nguide-way nav he milled ont to provide a shoulder te receive the wearplate 52' (see Figs. 9 and itl) 'against which the rollers or otherhearings of the roller hear- :ng retainer 3l travel, one of .whichretailiers is slipped over eerh end ot each pistonA 3'-3S, the langes 55and 5o fitting over the outer and inner longitudinal edges o' thepir-tons.. The roller hearings :33 are. held against lengnvv'isemovement from the retainer 54 and plaie 5:? by virtue of the faut thattheir ends bear against the sides of the slots 53 of the retainers.

. The centrifugal governor ereinoefore referred to is constructedpreferably o a lighten the same if disk 57, which may have openings 58t0 desired, and is tixedly mounted upon the power shaft '14. This diskhas a Cain 5S pivoted thereon olf from the center thereof by means of asuitable pivot .39, the arm G0 olf the eccentric cani 58 havingadjustable pivotal connection at 61 witha link G2 pivoted to the weight63 secured to the outer end of the lent` spring (S4,

ixedly secured at one end. as at 65, to the* disk 5?, there being a.suitable tensioning means 66 for thc spring (il. r[he (fam 58 has thecam slot. 5S which embraces the power shaft 14 and the strap (3T of theeccentric cam 55 has link connection GS with a shaft (39 to'whieh latteris connected the crank 71' which connects with the siem 6 of the valveLl. Th got ernor mechanism is designed for the purpose ofvanioinatirally regulating the valve -l to supply the operating lluid tothe engine .recording to the .arying loads. Obviously ai j othergovernor itiechanism may be employed.

ln the operation of the engine the fluid enters vthe init-t 3. andpasses through the opening: 5 in the that interinediae portion S) of thevaive 4, and in the event that the enginll be at rest and the. rotarycarrier oil center with the valve i in closil position, steam may he.supplied to the inlet port T0 through a liv-pass il. and permitted tocuter the steam cylinder to start the engine. "Cfluether the s am entersthe port 70 by way of tilt-inletA 3 or the ily-paas Ti, it passesunvardly in the port T0 and out of the upper cmi of the latter throughthe spaced orifices 73', bj.' virtue of which latter, the steam isspread. and passes into the cylinder and expands and iinpinges againstthe corres-pointing piston, causing the rotary carrier and the pmvershaft. H to rotate. As

the steam expands am? iiupinges against the.

stenza passing out ot' the steam cylinder buv.

way ot' the exhaust ports 2l-Til as the driven piston pnsses the exhaustports and when the rotary carrier reaches a predetermined speed thecentrifugal governor rots upon the automatic-ally l,-al:1rn'erl valvev lto .regulate the supply o? steam to the steam ('ylinder according to the.jarying load. i

As above noted, the piston carrier 'is eounterbalanced throughout itsentire rotin tion through the connection of the chambers 3l on the cuterside. of the abutment with the cinunher "Za wherein the operating tluiclis expanded to rotate the carrier. The pressure of the operating fluidcreates a rotating force operating upon the Carr-.er to rotate the sinneand also non-rotating forces which apt laterally upon the carrier andalso lat-- erally .against the outer wall of the chainher 'if'. Theselateral forces of the outer well of the chamber 7': are, of course, im-

material. The lateral forces, however, operating upon the rotatingcarrierlwill forcev the same against the supporting bearings therefor,thereby creating great friction and Wear and loss of power. It is theselateral forces against the rotating carrier which it is desired tocounterbalance so that the carrier may rotate freely and with little orno friction in the cylinder. This complete counterbalancing of thelateral or nonrotat-ing forces on the carrier is brought about in thefollowing manner. In the rapid rotation of the piston carrier, thecentrifugal force acting upon the operatingj fluid will carry thelubricant therein and a certain part of the water of condensation to theouter wall of the chamber 7* and through the ports 32 formed in theabutment to the chambers 31. Thus, a portion of the operating fluid istransferred to the outer face of the abut-ment end is forced against thecaps in a lateral direction opposite to the lateral forces of theoperating lluid acting upon the piston carrier in the chamber 7a. Thecaps, as above noted, are connected with the rotating piston carrier,and therefore, this lateral force on the caps will' offset orcounterbalance the lateral force on the carrier, provided of course,that the area of the surface on the caps exposed to the lateral force ofthe operating fluid, is substantially equal to the area of the outersurface 'of the pist-on carrier whicl. is exposed to the lateral forceof the opcr ating'iluid in the chamber 7a. These chambers 3l are soconstructed that the surface areas, above referred to, are substantiallyequal, and therefore, these parte constitute devices for utilizing aportion of the oper ating fluid for creating an opposing force y en thepiston carrier which is substantially equal to the lateral ornon-rotating force of the operating `fluid on the piston carrier. lVhena radial piston has just passed the inlet port, the surface area on therotating carrier exposed to the steam or fluid pressure is comparativelysmall. This surface area gradually increases with the rotation of thepiston carrier. The chambers 3l are arranged in successioncircumferentially about the abutment and as the radial pistons rotatewith the carrier, first one port and then another will be uncovered andtherebyY the area on the caps exposed to the pressure of the operating(luid will be increased in substantially the same increments andsimultaneously with lthe increased area on the piston carrier which isexposed to the pressurcvof the operating fluid. Therefore, during theentire rotation of 4the piston carrienrthe area of the surface on thecaps expos-ed to the fluid pressure will be substantially equal to thaton the carrier ex posed to the operating fluid presione- Fur thermore,'when the operating fluid tust en ters the chamber 7, the pressure onthe carrier is, of course, much greater than after said operating fluidhas expanded and its active force. substantially spent. By my improvedeonstruction, however, wherein ve portion of the operating fluid isutilized to effect a counterbalancing of the rotating carrier, thecounterbalancing Aforce on the capa would always equal, for each unitarea, the lateral or non-rotating force on the rotating carrier. Theselateral forces ofthe operating fluid on the rot-ating carrier not onlycause friction and wear and thereby loss of porer but also tend to liftthe rotating carrier in its bearings away from the abutment at the pointof running Contact, thereby causing a. leak. of the operating luid and afurther loss of power. 'By my construction, however, wherein the capsare connected to the rotating carrier in such a manner that theabutmentat the-point of running contact is embraced at the inner side bythe rotatin carrier and at the outer side by a cap and y the furtherproviding of the cap at this point with an opposing force substantiallyequal to the non-rotating force on the carrier, through the chambers 31and ports 32, above referred to, the rotating carrier is held in perfectrunning con-v tact with the `wall ofthe chamber 7a. In other words, theWall of the chamber and the carrier may be ground so as to have a.perfect running fit and through the aid of the caps contacting with theouter face of the abutment, said rotating carrier will be held in thesame predetermined position, regardless of the varying fluid pressure onthe rotating carrier and regardless of the fact that there isnecessarily a slight side play in. the bearings of the rotating carrier.

Furthermore, the accumulation of the lubricant. in the chambers 3l formsin eiecta lubricant support furthe caps, which causes the caps to runfreely and smoothly ,on the abutnient, and lhrouejh the counterbalancingof the non-rotating 7threes, euses the piston carrier to practicallyfloat in the cylinder ir perfect peripheral balance with no lateral ornon-rotating strains thereon` By my improved structure 1 provide highlyetlicient and durable rotary engine and one that is not limited to theuse of :steam as a driving medium but one Operable under the influenceof gas, air, combustion, or other operating Huid.

'hat. is claimed is:

1. In a rotary engine, a cylinder, flanged heads secured to the ends ofthe cylinder and each provided with an eccentric hub, a. power shaftjournaled through the eccentric hubs of the heads, a rotatable pistoncarrierh secured to the shaft and provided with pie ton guide-ways,- :1piston slidably mounted in each guide-way, each piston havinglongitudinally projecting stems at opposite ends, rings mounted on theeccentric hub of'each tiangcd head, said rings overlapping each otherand having movement one on the -other with the innermost ring movable onceive the corresponding stein of the correspondingpiston to support andbalance the pistons, a vaive, and means for operating the valveto'supply the operating tiuid to the cylinder according to' the varyingloads,

2. In a rotarj; engine, a cylinder, fiauged heads secured to the' endsof the cylinder and each provided with an eccentric hub, a power shaft.joprnaied through the eccentric hubs of the heads, a rotatable pistoncarrier secured to the' shaft and provided with piston guide-ways, apiston slidably mounted in each guide-way, each piston havinglongitudinally projecting stems at opposite ends, rings mounted on theeccentric hub of cach fianged head, each ring havingr a lug providedwith a bearing to receive the correspondingstcm of the correspondingpiston to supporty and balance the pistons, a valve, and means foroperating the valve to supply the operating fiuid according to thevarying loads.

3. Tn a rotary engine, a cylinder, heads secured to the ends of thecylinder and each provided ivith an eccentric hub, a. power shaftjournaled through the eccentric hubsv of the heads, a rotatable pistoncarrier secured to the shaft and provided with piston guide-Ways, apiston slidably mounted in each guide-way, each piston havinglongitudinally projecting stems atopposite ends.

. rings mounted on the eccentric hub of each head, said ringscircumfercntially overlapping each other and having movement one on theother vviththc innermost. ring movable on the corresponding eccentrichub,each ring having a lug provided with a bearing to receive thecorresponding stem of the cor. responding piston to support and balancethe pistons, a valve chamber having communication with the cylinder. avalve mounted in the valve chamber, and a governor mechanism havingconnection with the valve to operate the latter automatically to supplythe operating Huid according to the var vng loads.

` 4. In a rotary engine, a cylinder, flanged disk heads secured to theends of the-cylinder and cach provided with an eccentric hub, a powershaft. journaled through the eccentric hubs of the heads, a rotatablepiston cnrrier secured to the shaft and provided with piston guidoways,a piston slidalily mounted in each guide-way, each piston havinglongitudinally projecting stems at. opposite ends, rings mounted on theeccentric hub of each flanged head, said rings circumferentialiyintereng'aging and having movement one on the other with theinnermostring movabie on the corresponding. eccentric hub, each ringhaving a lug provided withv a bearing to receive the corresponding steinof the corresponding piston to support and balance the pistons, theupper ends of said lugs being curved to correspond with the curvature ofthe Hanges of sa'id heads and oscillating against said tianges, the'lugs beingl of a. thickness equai to the thickness of both' rings andhaving their inner ends curved to correspond vvith the curvature of theouter circumference of the corresponding rings, said 'lugs oscillatingbetween the tianges of the heads and the circumference of thex rings, a

.valve, and means for operating the valve to supply the operating tiuidaccording to 4the varying loads.

5. In arotary engine, a c viinder, flanged disk heads secured to theends of the cylinder, a power shaft journaled eccentrically through theheads, a rotatable piston carrier secured to the shaft and provided withpiston guide-ways` a piston slidably mounted in cach guide-way, meansoperable Within the flanges of the heads and contacting with the Rangesand operatively connected to the pistous to support and balance thelatter, a. valve, and means operatively connectedwith the valve tosupply the operating fluid according to the varying loads.

6.' In a rotary engine, a cylinder, heads secured to the ends of thecylinder, a power shaft journaled eccentrically through the heads. arotatable piston carrier secured to the shaft and provided with pistonIguideways, .a piston slidably mounted in each guide-way, rings havingoscillatory movement with relation to and upon each other and connectedto the pistons to operate the same, said rings having inter-engagingparts to counterbalanee the pistons.

7. In a rotary engine, a cylinder, heads secured to the ends oftheicylinder, a power shaft journaled eccentricnlly through the heads, arotatable piston carrier secured to the shaft and provided with pistonguideways, a piston slidably mounted in each guide-way, combined pistonsupporting and balancing means disposed at the ends of the pistons andhaving operative connection therewith, a valve, and means for operatingthe valve. Y

8. In a rotary engine, a cylinder, an abutment rigidly mounted in thecylinder, heads secured to the ends of the c vlinder, a power shaftiournaled eccentricaily through the heads, a rotatable piston carriersecured to the shaft and provided with piston guideways. a pistonslidably mounted in each guide-Way, counterbalancing means havingveonnnon operative connections with the connection with the pistons tosupport andr balance the latter, a valve, and means operativelyconnected with the valve to operate the latter automatically.

10. In a rotary engine. a cylinder, an abutmentfixedly secured in thecylinder and hav- `ing its ends reduced, heads-secured to the ends ofthe cylinder, caps telescoping the reduced ends of the abutment andprovided with slotted openings` a rotatable piston carrier secured tosaid shaft and provided with piston guide-waysfa piston slidably mountedin each guide-way with portions of each piston projecting through saidslotted openings oz-' the caps, counterbalancing means for the pistonsinterposed between the heads and said caps and operatively connected tothe projecting parts of the pistons, a valve and means for operating thevalve, to supply the operating [luid to the cylinder according to thevarying loads.

11. In a rotary engine, a` cylinder. an abutment fixedly mounted in thecylinder and having its ends reduced, a power shaft journaledeccentrically through the heads, caps confined within the cylinder andtelescoping with the reduced ends of the abutment and provided withslotted openings, a

llrotatable piston carrier secured to the shaft and .provided withpiston guide-ways, a piston slidably mounted in each guide-way, eachpiston having parts projecting through the openings of said caps, meansmounted between each head and the adjacent cap and operatively connectedto the projecting parts of the pistons to balance the latter, a "alve,

and means for ope-rating the valve to supply the operating fluid to thecylinder.

12. In a rotary engine, a cylinder, an abutment rigidly mounted in thecylinder, caps teiescoping with the ends of the abutment, heads securedto the cylinder in spaced -elation to said caps, a power shaft journaledeccentricallv through the heads and caps, a

rotatable piston carrier secured to the shaft and rovided with pistonguideways, a piston slide. ly mounted in each i'eide-Way, means operablebetween each hea and the adjacent cap and having operative connectionwithv the pistonsto sup ort and balance the latter during the centri galforce developed incident to--operation of the rotatable piston carrier,a valve. and means for operating the valve to supply the operating fluidto the cylinder.

13. In a rotary engine, a cylinder, an abutment rigidly mounted in thecylinder, caps telescoping with the ends of the abutment and providedwith openings, heads secured to tbecylinder, a .power ,shaft journaledeccentrically through the heads and caps. a rotatable piston carriersecured to tbe shaft and provided with piston guide-ways, a pistonslidably mounted in each guide-way and having parts projecting throughsaid openings of the caps, said heads having eccentric hubs,inter-engaging rings movably mounted ou said eccentric hubs and havingoperative connection with the projecting parts of the pistons tocounterbalance the latter during operation of the piston carrier, avalve. means for operating the valve automatically, and a by-pass tosupply the operating fluid to the cylinder independently of the valveoperating means.

14. In a rotar)Y engine, a cylinder. heads provided with pistonguide-ways. a piston.

mounted in each guideway to slide relative to the carrier,inter-engaging rings counected to the pistons for counter-balancing thepistons during the operation of the piston carrier, a tluid inlet. avalve interposed between the inlet and the cylinder, and means foroperating the valve to supply the operating Huid to the cylinder.

15. The combination with a cylinder, a fixed member within saidcylinder, a rotatable member within said fixed member, sliding pistonsmounted for radial movement on said rotatable member. means forsupplying an operating fluid between said members to operate therotatable member, of a fluid pressure means to` oppose andcounterbalance the non-rotating forces of the operating fluid on saidrotatable member, and means operatively connecting the pistons togetherto overcome the centrifugal force incident to rotation of the rotatablemember and thereby counterbalance the pistons.

16. In a rotary engine, a cylinder, an abutment rigidly mounted in thecylinder, caps telescoping with the ends of the abutment and providedwith radial openings, heads secured to the cylinder in spaced relationto said caps, a power shaft journaled eccentrically through the heads,s. rotatable los piston carrier secured to the shaft and proisc.

,a piston slidably mounted in each guideay. means t'or securing saidcaps to the ends of the said piston carrier, means eoni strueted andarranged` and interposed he.-

tween eaeh head and lthe adjacent cap and having operative connectionwith said pisg tous through thn openings or the caps to counterlmlancethe pistons during operation thereof ineident to operation of the pistoncarrier. and means for suppiying operating tluid to the eyiinderaccording to the varying' loads. t

13.1n a rotary engine, a cylinder7 an abutment in the cylinder. capsteles'eoping with' the, ends of the abutment, the exterior of theabutment being constructed to provide #luid rereiving chambers betweenthe raps and the, abutment. said abutment having ports leading into saidchambers, heads secured to the cylinder, a power shaft journaled throughthe. heads. a` r iaiv piston carrier seemed io the shaft and providedwith piston 'uide\vay-a pisxons slidablc in z the. guidon-nys, means iorcounterhalaneine y the pistons. means for connecting the caps to theiiston carrier and iin-ans for sun ilV- .Y

ing operating` lluid to the Cylinder to drive the piston carrier.

19.11) a rotary engine, a'ffylinder.y an abutment in the. Cylinder. rapsteleseoping with the ends of the abutment, the. exterior of theabutment. being eonstructiul lo provide i'iuid receiving ehamhersbetween the- Caps and the abutment, said abutment. having ports leadinginto s id ehambersJieads secured to the cylinder, a power shaftiournaled through the heads, a rotatable piston carrier secured to the.shaft and provided with piston guide-ways, pistons slidable in theguide-Ways, means for connettine,r the pistons whereby one pistoneounterbalanees the other. and means for supplying an op erating fluidto the cylinder.

Q0. In a, rotar)` engine. a cylinder,v an abutment xedly mounted in thecylinder. a rotary piston carrier journaled in the cylinder and providedwith piston guide-Ways. pistons mounted in the pist-on carrier andslidahle relatively thereto, means for coun-l terbalancing the pistons,means for supplying operating tuid to the cylinder to operate thecarrier. and means constructed and arranged to utilize a portion of theoperatl'ing Huid to equalize the non-rotating force of the operatingfluid on the rotatable carrier to counterhalance the same.

21. n aV rotary engine. a cylinder, an abutment fixed in the cylinderand reduced at. its ends and at its reduced ends provided with ribs7caps tting over the reduced ends of the abutment ind coperating with theribs to provide fluid receiving chambers= the abutment havingportsleading into the Chambers, a rotatable piston carrier journaled in thecylinder and connected to the raps. pisirns. mounted in the-carrier to-slide relatively thereto, and means for supplying operatin,r iiuid lothe cylinder aecordiin,Y to the varying' toads. a portion ot theoperating iiuid entering' said chambers through the ports of theabatuzent, for eqnalizing the teral force of the operating duid on thepiston carrier to eouuterbahinee the same.

The combination with two fixed members having circumferential contactwith eaeh other. a movable member within the innermostfixed member andmeans t'or supplying an operatingr fluid between the innermost memberand the movable member to arranged to utilize a. portion of theoperating tluid to eounterlmlanee the movable member.

Q3. The combination with two fixed members having circumferentialcontact Awith each other. a movable member within the innermost lixedmember. said movable member having pistons; mounted therein. and meansfor supplying au operating?r tiuid between i the innermost fixed memberand the vmovi able member to operate the latter. of means 'constructedand arranged to utilize a portion of the operating tluid toeounterbalanee the movable member, and means for coun- `terbalancing thepistons. Y

Q4. The combination with two fixed members having circumferentialcontant with each other. a movable member within the l innermost fixedmember, said movable member having pistons mounted therein. and meansfor supplying an operating fluid between the innermost fixed member andthe mo able member, of means constructed and arranged to utilize aportion of the operating fluid to counterbalane-e the movable member,and sets of interengagiug rings eecentrieally mounted adiacent saidmembers` to counterbalance the pistons.

25. The combination with two fixed members having circumferentialcontact ivith .ach other, a movable member within the. innermost fixedmember,said movable member having pistons mounted therein to sliderelative to the movable member, and means for supplying an operatingduid between the innermost xed member .and the movable member, of meansconstructed and arranoed to utilize a portion of the operating fluidA tooperate the latter, of means constructed and.

counterbalance the movable member, and means constructed and arrangedadjacent said members to counterbalance the pistons.

26. The combination with fixed members having circumferential contactwith each other, a rotatable member within the innermost fixed memberprovided with pistons slidablc relative thereto and means forsupplyingan operating fluid between the innermost fixed member and therotatable member, of means constructed and arranged to utilize aportion. of the operating fluid to' Vcounterl'ialance the rotatablemember, and

means constructed and arranged adjacent said members for connecting Caidpistons together to countcrbalancc them against the centrifugal actionincident to rotation of the rotatable member.

27. In a rotary engine. a cylinder, an abutment rigidly mounted in thecylinder, and having its ends reduced, heads secured to the ends of thecylinder, a. power shaft journaled through the heads, a rotatable pistoncarrier fixed to the shaft within the. cylinder, pistons mounted iu tbecarrier, to slide relative thereto, caps fixed to the piston car rierand teleseoping with the reduced ends of the abutment. to form fluidreceiving chambers, means for supplying an operating fluid to therotatable carrier, means to convey a portion of the operating fluid tosaid chambers to create an opposing force on the caps to equalize thelateral force of the operating fluid or. said rotatable carrier` avalve, and means for o ,erating the valve.

28. In ay rotary engine, a. cylinder,'an abutment rigidly mounted in thecylinder and having its ends redtuwl, heads secured to the ends of thecylinder. a power shaft journaled through the heads, a rotatable pistoncarrier fixed to the shaft within the cylinder, pistons mounted in thet-aLrier to slide relative thereto, caps fixed to piston carrier andtelescoping with thc reduced ends of the abutment to form fluidreceiving chambers. and means to transfer a portion of the operatingfluid to oppose the non-rotating force of the operating fluid againstthe rotatable carrier to counterbalance the pistoncarrier. meansconstructed and arranged between each head and the adjacent cap andhaving operative connection with. the pistons to eounterbalancc thelatter, a valve, and means for operating the valve.

29. The-combination with two flxed members having circumferentialcontact with each other. a movable member within the innermost fixedmember and means for sup- --plying an operating fluid between theymovable member and tbe innermost fixed membei', 'of means constructedand arrangiert tn 1 transfer a portion of the operating fluid on theouter side of the innermost fixed member and means to utilize thetransferred final to oppose the non-rotating force of the op eratmg fuidto counter'oalance .the movable member.

30. The eombinationwith a cylinder, a fixed member, a movable member,and means to supply an operating fluid between said members, of meansarranged to transfer a portion of the operating fluid to the outer sideof the fixed member, and means for utilizing the transrerred fluid onthe out side Aof the fixed member to eounterbalancc the movable member,the utilizing means including a movablev member connected to said firstnamed movable member.

31. The combination with a cylinder, a fixed member, a rotary member,the rotary member having radially slidablepistons and means to supply anoperating fluid between said members, of means constructed and arrangedto transfer a portion of the operating fluid-to the outer side of thefixed member, and means for utilizing,r the transferred Huid on theoutside of the fixed member to counterbalance the rotary member,- iheutilizing nie-ans including a. movable member, and means constructed andarranged to operatively connect the pistons to counterbalance`the'latter during operation of the rotary member under the influence ofthe operating fluid.

32. Tle combination with a cylinder, a fixed member, a rotatable member,the rotatable member having radially slidable istons and means to supplyan operating uid between said members, of means constructed and arrangedto transfer a portion of the operating fluid to the outer side of thefixed member, andmeans for utilizing said translOO ferred portion of theoperating fiuid on the y outside of the fixed member to counterbalancethe rotatable member, the utilizing means including a movable member,and

means connecting the pistons whereby one` piston counterbalancesthe;other during operation of the rotatable member under the inliuenceof said operating fluid.

33.11": a rotary engine,'a cylinder, an abutment fixed in the cylinderand having its ends reduced, heads secured to the ends ot' the cylinder,a power shaft journal-ed in said heads, a. rotary piston carrier securedto said shaft and provided with piston guide-ways, pistons slidablymounted in the guide-ways. the abutment having ports at its reducedends, caps secured over the reduced ends of the abutment to providefluid receiving chambers at opposite ends ofthe abutment which fluidenters the chamber by way of said ports and which counterbalances thepiston carrier, said caps having openings and the pistons having partsprojecting through the openinos, and means mounted adjacent the heads ofthe cylinders and operatively connected to the projecting portions ofthe pistons to eounterbalance the latter during rotation of the pistoncarrier, a valve and means for operating the valve.

3l. The combination with a cylinder, a fixed member, a movable member,and means for supplying an operating fluid between said members, ofmeans constructed and arranged to transfer a portion of the. operatingfluid to the outside of tlie fixed member at the ends only of thelatter, and means for utilizing the fluid on the outside of the fixedmember to counterbalance the movable member.

The combination with a cylinder, a fixed member, a movable member, andmeans for supplying an operating tiuid between said members, of meansconstructed and arranged to transfer a portion of the operating fluid tothe outside of the fixed member at each end of the latter, and means toutilize the transferred fluid on the outside of the fixed member at theends thereof to eoanterbaiance tbe movable member, the utilizing meansat one end being independent of the utilizing means at the opposite end.

3G. The combination with a cylinder', a fixed' member, a rotatable'member, and means for supplying an operating fluid between said members,of' means constructed andarranged to ltransfer a portion of' theoperating fluid to the outside of tbe fixed member at each end of tbelatter and means to utilize the transferred portion of the operatingfiuid on the outside of the fixed member at its ends only tocounterbalanee the rotatablemember, parts of said utilizing means beingcarried by the rotatable member for rotation therewith. n

37. The combination with a'cylinder, a

- fixed member, a movable member within the fixed member and means forsupplying an operating fluid between said members, of means composed ofparts carried by the tlxed and movable members to provide chambers onthe outside of the fixed member -to receive a portion of the operatingfluid i fixed member, a movable member, and means for supplying anoperating fiuid between the members, of means constructed and arrangedto transfer a portion of the operating fluid to the outside of the fixedmember and means to utilize the transferred operating fluid to opposethe non-rotating forces of the operating fluid on the movable member tocounterbalance the same, said utilizing means including a fioatingmember.

40. The combination with a cylinder, a fixed member, a movable member,and means for supplying an operating fluid between said members, ofmeans constructed and arranged to transfer a portion of the operatingfluid to the outside'of the fixed member, and means to utilize thetransferred operating fluid to balance the movable member, saidutilizing means including a,`iloat' ing member carried by the movablemember.

41. The combination with a cylinder, a xed member Within said cylinder,a movable member within said fixed member, and means for supplying anoperating fiuid between said members to operate the movable member, ofmeans to transfer a portion of the operating fluid to the outer side ofsaid.,

fixed member, and means operated by the transferred fluid tocounterbalance the movable member.

42. The combination with a cylinder, a fixed member within saidcylinder, a movable member witbin said fixed member, and means forsupplying an operating fluid between said members to operate the movablemember, of means to transfer a portion of the `operating fluid to theouter side of the fixed member, and means for utilizing tbe transferredportion of the operating fiuid on the outer side of tbe fixed member forcrean ing opposing force on the movable meinber substantially equal .tothe lateral force of the operating fiuid on the movable member.

43. In a rotary engine, in combination, a

cylinder, a rotatable piston carrier mounted in the cylinder, pistonscarried by the carrier, means for supplying an operating fluidv betweenthe carrier and cylinder to operate tbe-carrier, and means constructedand arranged to receive a portion of the fluid delivered between thecarrier and cylinder, and devices for utilizing the same tocountcrbalance the carrier.

ffl. In a rotary engine, in combination, a cylinder` an abutment fixedlymounted in the cylinder, a rotatable carrier journaled in the cylinderand having a flange at each end adapted to overlap the sides oftheabutment, means for supplying operating fiuid between the carrier andthe abutment to operate the carrier, and means constructed and arrangedto transfer a portion of the operating firid to tbe outside of theabutment, and means to utilize the transferred portion of the operatingfiuid on the outer side of the abutment between the latter and thecylinder to counterbalance the rotatable piston carrier.

45. In a rotary engine, in combination, a cylinder', an abutment withinthe cylinder, a

rotatable carrier journaled in Vtbe cylinder, and located within saidabutment, means tor supplying an operating fluid between the abutmentand carrier to operate the latter, and means constructed and arranged totransfer a portion of the operating tinid to the outside of the abutmentfor action against the ends of the carrier to overcome end thrust on thelatter.

46. In a rotary engine, in combination, a cylinder, a tixed member, arotatable carrier iournalcd in the cylinder, and located within thetixed member, means for supplying an operating fluid betweenthe'eylinder and carrier to operate the latter, and means coustructedand arranged to transfer a portion ol the operating fluid to the outerside of the fixed member, and means to utilize the transfer-red tlnid toprovide for a'peripheral balanco of the movable member.

47. in a rotary engine, in combination, a cylinder, a rotatable pistoncarrier journaied in the, cylinder, pistons carried by the carrier,means for supplying an operatin, \,r fluid bet.veen the cylinder and therotatable car rier to operate the latter, and means constructed andarranged toircceive a portieri of the operating fluid, and devices forutili?.- ing the same to eonnterbahtnce the carrier during the entirerotation of the carrier.

4S. In a rotary engine` in combination, a cylinder, a power shaftjonrnaled in the cylinder, a rotatable piston carrier seem' ft to theshaft, pistons carried by the carrier, a valve` means for operating titevalve to snp ply the operating tluid to' the c vlinder to drive thecarrier, and a set of rings operatively connected to the pistons at eachend of the carrier, said rings 'having interengaging parts whereby one.piston balances the other in all parts of the revolution of tho carrier.

49. In a rotary engine, in eon'ibination, a cylinder. a power shaftjournaled in the cylinder. a rotatable piston carrier secured to theshaft, pistons carried by the carrier, di vices operatively connected tothe pistons to hold tbe pistons in constant running joint with thecylinder wall, and means for corr meeting the devices whereby one of thepistons balances the other duringr all parts of the rotation ol" thecarrier.

5). ln a. rotary engine, in combination, z. cylinder, a power shaftjournaled in the c vlinder,` a rotatable piston carrier secured to theshalt. pistons carried b v the carrier, a valve. means for operating thevalve to sup pl)Y the opernieg fluid to the cylimler t:-

drive the carrier. means constructed and arranged and operativelyconnected to me pistons to balance the latter, one piston balana ing tbeother in all parte ofthe revolution ot' the carrier with the pistonshaving a eonstant running joint with the c vliuder wall, and meansconstructed and arranged to transfer a portion of the operating fluidfrom between the carrier and cylinder for cooperating with the operatingfluid between the carrier and cylinder to oppose the nonrotating forceot the fluid on the piston carrier to etfect a balancing action upon thecarrier. i I

:31. ln a rotary engine., in combination, a cylinder,'a power shaftjonrnaled in the cylinder, a rotatable piston carrier secured to theshaft, pistons carried by the carrier, a valve, means for operating thevalve to supply the operating fluid to the cylinder to drive thecarrier, means constructed and arranged and operativeiniY connected tothe pistous to balance the latter, one piston balancing the other in ailparts of the revolution of the carrier with the pistons having aconetant running joint with the cylinder wall, means constructed andarranged to transfer a portion of the operating fluid from between thecarrier and cylinder exteriorly of the carrier, and means for utilizingthe transferred operating uid to counterbalance the rotatable pistoncarrier.

52. ln a rotary engine, a cylinder, an abutment, a rotary carrierjournaled in the cylinder and located in said abutment, pistons carriedby the carrier` means constructed and arranged to snpplyan operatingfluid to the cylinder to rotate the carrier, and means` constructed andarranged to transfer a portion of the operating fluid to the outer sideof the abutment, said carrier having means operated upon by thetanserred tluid to provide for a 'peripheral balance of the carrier.

5ft. ln a rotary engine, in combination, a cylinder, a carrier journaledin the cylinder, pistons carried by the carrier, means to supply theoperating Huid to the eylinder to operate the carrier, a tioating membersecured to the carrier and operated thereby, and means cooperating withthe floating member to counter-balance the latter.

5l. The combination with a cylinder, a fixed member, a movable memberwith means for supplying an operating fluid between said members tooperate the movable member, of floating members` having direct,connection with the movable member, and means constructed and arrangedwhereby 'the movable and floating members arc remnterbalanced one by theother.

55. 'ihe combination of a cylinder, a fixed member, a rotatable memberwithin the txed member.v a movable member connected to the rotatablemember and having a running contact with `the fixed member, means l'or'supplying an operatingr fluid between said members for operating therotatable member, and nie-.ins for receiving t' e. lubricant separatedfrom the operating tlaid by eentritugal force and applying the same tothe running contact between the movable member, pistons mounted on saidcarrier and j movable radially relative ther \io. a movable l memberconnected to thc carrier and having' running contact with the outer faceot' the fixed member. means for supplyingr said i 'l5 chamber with anoperating;r fluid. and means 5 for receiving; thelubricant separatedVfrom the operating fluid by centrifugal force and applying the same tothe. running contact between the movable member and the fixed member,whereby the movable member is supported on the fixed member, and therotatable carrier caused to float in said chamber.

57 The combination of a cylinder, a fixed member located in thecylinder. and ha ving! a cylindrical chamber disposed eceentrieally tothe cylinder, said fixed member having contact centrally thereof withthe walls of the cylinder and at each end thereof spaced from the wallsof the cylinder. a shaft centrally of the cylinder, a cylindricalcarrier mounted on the shaft and having itsvouter Wall in Contact withthe wall of the chamber, pistons mounted on the carrier and movableradiallyl relative thereto, movable members located at each end of thefixed member. and in the space between the fixed member and thecylinder, said movable members having running Contact with the fixedmemlo ber, means for connecting the movable niembers with the carrier,means for supplying said chamber with an operating fluid. and means forreceiving the lubricant separated from the operating fluid bycentrifugal force.

5 and applying the saine to the running contact between the movablemembers and the i tween said members for operating: the robers aresupported and the carrier caused fixed members, whereby the movableinemto float in said chamber.

58. The combination of a fixed member, a

rotatable member within the fixed member. caps connected to saidrotatable member and having running contact with the fixed meniber.means for supplying an operating fluid f l 5" between said' members foroperating the rotatable member. said fixed member having pockets formedin its face contacting.1 with the caps and having passages leading Vtosail pockets whereby the lubricant in the operating fluid may becausedby centrifugal force to accumulate in said pockets and provide asupport on whih the capsand rotating member float.

). The combination of a cylinder, 'a 'rotatable member withinsaidcylinder, meansA for supplying an operating fluid to the ro. tatablemember for rotating the saine. and fluid pressure means for providingsaid rotatable memberwith an opposuugir torce substantially equal to thenon-rotating force of 1 the operating fluid against. said rotatablemember to eounterbalance the same during,` the entire rotation ofl therotatable member.

(it). The combination with a cylinder, a

fixed member within'said cvlinder. a movable member within said tixedmember, and means for supplying.r an operating fluid bctween .saidmembers to operate the,mo\able u'embcr, of a fluid pressure means forpro- .'idinpr said movable. member with an oppos- 80 in;r forcesubstantially equal tothe latei'al torce ot' the operating fluid againstsaid movable member to counterbalance the same during the entirerotation of the movable member. 85 f 61..'f`he combination with' acylinder. a

l fixed member within said cylinder, a ro tatable member within saidfixed member, and means for supplying an operating fluid between saidmembers to operate the ro 90 tatable member, of'v a fluid pressure meansfor providing said rotatable inembei' with an opposing forcesubstantially equal to the non-rotating force of the operating! fluid'against said rotatable member to coiinter- 95 balance the same duringthe entire rotation of the rota-table member.

(r2. The combination of a cylinder, a rotatable member within saidcylinder. means for supplyingr an operating fluid to `the ro- 300tatable nieinberfor rotating the same. and means for utilizing a portionof the operat me fluid to create. an opposing force on said vrotatablemember substantially equal to th'e non-rotating force of the operatingfluid against said rotatable niember to counterbalance the same.

(E3. The combination with a cylinder. a fixed member within saidcylinder. a retatable member within said fixed member. 11u

means for supplying an operating fluid betafable member, and means t'oi'utilizing a portion of the operatin; r fluid to create an opposing forceon said Habitable member substantially equal to the non-rotatiiig`rforce ef the operating;r fluid against the. rotatable member tocounterbalame the same.

(S4. The combination of a cylinder. a tixed member within the cylinder,a rotatable-1,20

meint-er -ind connect-ed to the rotatable member, and fluid pressuremeans acting on said caps fer providing a Yperipheral balance for saidrotatable member.

65. T he combination of a cylinder, a shaft located centrally-if thecylinder, said cylllt! necting the.

indcr havingr a cylindrical chamber disposed rccen'trlcall to the shaft,a cylindrical carrier mounted rn thc shaft and located in said chamberwith itsfiuter wall in contact with the wall of the chamber, radiallydisposed pistons mounted on the carrier, means for supplying;l a luid toSaid chamber, and means l'or providing the. carrier with an opposingforce substantially equal to the lat- 1. eral force ol' the liuidagainst the. carrier, to

counicrbalance the saine.

titl. 'lhe combination of a cylinder, a :shaft located centrally ot' thecylinder, said cylindex' having a cylindrical chamber disposed 15ccceutrically to the shaft, a rotatable cylindrical carrier mounted onthe Sli-.ift and located in said chamber, with its outer wall in contactwith the. wall' of the chamber, pistons'inounted on the carrier andmovable 29 radially relative thereto, means for holding!` the pistons incont 1ct. willi the 'alle of the chamber as the carrier rotates, meansfor eounterbala:icing one piston by the other. means for supplying saidchamber with a tiuid, and means for providing the carrier with anopposing force substantiall)7 equal to the lateral force of the tinidagainst the carrier. to counterbalance the same.

6T. 'lliel combination of a cylinder, a shaft 30 located centrally ofthe cylinder, said c vl- Inder having a cylindrical chamber disposed.

eccentrically to the Shaft, a rotatable cj:- lindrical carrier mountedon the :.lat't'. and located In the chamber with its outer wall incontact: with the wall ot the chamber. pistons mounted on the carrierand inm'able radially relative thereto, stationary eccentric bearings.rings (-.oiperating with the hearings i and connected to the pistons forholdin;r the 40 pistons in contact with the wall ot' the chainJproviding,1r the carrier with an opprsiug: foi-.1-

-snhslantially equal to the lateral torce ufg the fluid against the.carrier. to connterbalance tile-saine..

GS. 'l'lie combination of a cylinder. a shaf-i located cenlially of the'cylinder. a fixed abutment within the cylinder and haring a ment withinthe cylinder having a cylindrical chamber disposed ecceutricalll,Y tothe v shaft. a rotatable cylindrical carrier mounted on the shaft andlocated in said chamber with its outer wall in contact with the Wall ofthe chamber, pistons mounted on the cal`- rier. and movable radiallyrelative thereto, iin-ans for holdimgr the pistons in contact with thewail of the chamber. as the carrier rotates. means for connterbalancingone piston Vb i' the other. means for supplying said chamber with anopcratingtluid, and means for providing' the carrier with an opposingforce substantially equal to the lateral force of the fluid against thecarrier, to counterbalance the saine.

T0. The combination of a cylinder, a shaft loch-ted centrally of thecylinder, a fixed abutment within the cylinder and-having a ci'lindrical chalutier disposed eccentrically to the shaft, a rotatablelcylindrical carrier mounted on the shaft and` located in the chamberwith its outer wall in Contact with the wall of the chamber, pistonsmounted on the carrier and movable radially relative tlm-cio. stationaryeccentric bearings,'rings coperating with the, bearings and connectedwith the pistons for holding the saine in contact with the wall of thechamber as the earrier rotates, means for connecting the rings wherebyone piston counterbalance the other, means for supplying the chamberwith an operating` fluid` and means for providing tlncarrier with :inopposing torce substantially equal to the lateral force of the operatingtluid against the carrier. to counterbalance the Same.

Tl. 'llrc combination ol' a cylinder. a Shaft lot-ated eentrallj.' ol'tht cylinder, said cylinder having: a cylindrical chamber disposedei'ccntrically to tho shaft. a rotatable cylindi-f-:il carrier mountedon the shaft and l0-l cated in said chamber` with its outer u all incontact with the wah of the chamber` pistons mounted on the carrier andmovable radiall).r relative thereto. means for holding the pistons incontact. with the walls of the f chamber as the carrier rotates, meansfor e:noten-balancing one piston b v the other,

c \'liiidri ':\l chamber disposed 'eccentric-illy 5 to the shaft, acylindrical carrier mounted on the shaft and located in said clniintiberwith its outer wall in contact with the wall of the chamber. radiallydisprsed pistons mounted on the carrier and slidable relative thereto`means for supplying,r an operating fluid to the chamber. and f 60 meansfor providing the. carrier i'ith an o posing foi-ee substantially equalto t ic cated in the chamber with its outer wall in 35 located'centrally of the cylinder. an abutnn-ans for supplying said chamber witha. llnisl. and means for utilizing a portion of lla operating tluiil.for-providing the rotatable carrier with un opposing force substantiallyequal to the lateral force of the i opt-:ating fluid on the carrier tocounter- -v balance llitv Stime.`

7;. The combination of a cylinder, a shaft lof-ated centrally of thecylinder. said cylindvibaring a cylindrical chamber' disposedcewntricallv to the shaft. a rotatable cyliudrical carrier mounted onthe shaft and lol crntavt with the/null' of thc chamber. pis-

